Arrokoth close-up reveals how planetary building blocks were constructed

Arrokoth close-up reveals how planetary building blocks were constructed

William B. McKinnon, professor of earth and planetary sciences in Arts & Sciences at Washington University in St. Louis, led one of three new studies that together provide a far more complete picture of the composition and origin of Arrokoth. The new research published in Science points to the resolution of a longstanding scientific controversy about how such primitive planetary building blocks called planetesimals were formed.
What a meteorite is teaching us about space history

What a meteorite is teaching us about space history

Presolar grains — tiny bits of solid interstellar material formed before the sun was born — are sometimes found in primitive meteorites. But a noble gas analysis from physicists in Arts & Sciences reveals evidence of presolar grains in part of a meteorite where they are not expected to be found.
Global warming focus of 2018 McDonnell lecture

Global warming focus of 2018 McDonnell lecture

S. George Philander, one of the world’s leading experts on climate and the interactions between the ocean and atmosphere, will deliver two talks March 28 and 29 as part of the McDonnell Distinguished Lecture Series, sponsored by Washington University in St. Louis’ McDonnell Center for the Space Sciences.
Wonders of Pluto

Wonders of Pluto

William B. McKinnon, professor of earth and planetary sciences in Arts & Sciences, will deliver the McDonnell Distinguished Lecture on Wednesday, March 29, on the Danforth Campus of Washington University in St. Louis.
Obituary: Ernst K. Zinner, astrophysicist and cosmochemist, 78

Obituary: Ernst K. Zinner, astrophysicist and cosmochemist, 78

Ernst K. Zinner, PhD, research professor emeritus of physics and earth and planetary sciences in Arts & Sciences at Washington University in St. Louis, died Thursday, July 30, of medical complications of mantle cell lymphoma. Among many other accomplishments, in 1987 Zinner identified for the first time material in the laboratory that predated the formation of the solar system 4.6 billion years ago.
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